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KMID : 0928320090090020122
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Korean Journal of Health Promotion and Disease Prevention
2009 Volume.9 No. 2 p.122 ~ p.128
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The Difference of Fitness Level According to Blood Pressure in Korean Men
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So Wi-Young
Choi Dai-Hyuk
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Abstract
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Background: The prevalence of hypertension has recently been increasing due to westernized diet, physical inactivity, and lack of exercise. Many researchers are interested in exercise therapy to prevent hypertension. However, most studies are limited to analysing the effects and usefulness of exercise in lowering hypertension. In addition, there is no analysis of the difference in fitness level with regard to hypertension. And from public health point of view, it is important to identify this according to age. Knowing this would be useful in preventing and hypertension. Thus, the purpose of this study is to identify the difference in fitness levels according to blood pressure in adult males in their twenties and older and emphasize the importance of fitness level with regards to hypertension. Also, we examine the differences in cardiovascular function.
Methods: Subjects were 1,895 adult males in their twenties and older who visited a health promotion center at Y-Gu(a district in Seoul, Korea) public health center and participated in comprehensive medical testing including blood pressure from 2nd January 2004 to 31st September 2008. They were divided into normal, pre-hypertension, and hypertension groups according to JNC7 criteria. Cardiorespiratory function was evaluated by measuring their resting heart rate and lung capacity. Fitness was evaluated by cardiorespiratory endurance, muscular endurance and power, agility, balance, and flexibility. The differences in fitness was analyzed by ANCOVA adjusting for independent variables including body mass index, alcohol use, and smoking, which are well-known independent variables that affect blood pressure.
Results: There was a significant difference in resting heart rate among the three groups; for lung capacity, only males in their 50s showed significant difference. Cardiorespiratory endurance was significantly different in all age groups by the three groups. Muscular endurance was significantly different in all age groups by the three groups except for their thirties and fifties. Muscle strength was significantly different in all age groups. Instantaneous reactionary force was significantly different in all ages except for 40s. Agility was significantly different in all age groups except for 40s. Balance was significantly different in all age groups except for 50s and over 60s. And flexibility was significantly different only in the groups aged over sixty. However, post-hoc test showed significant differences in resting heart rate, cardiorespiratory fitness, and muscle strength ratio among the three groups.
Conclusions: There were significant differences in resting heart rate, cardiorespiratory fitness, muscle strength ratio (except for lung capacity), muscular endurance, reactionary force, agility, balance, and flexibility
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KEYWORD
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Hypertension, Cardiorespiratory function, Physical fitness
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